Exhauster for roaster

ABSTRACT

Provided is an exhauster for a roaster which can exhaust the smell and the smoke which are generated when the meat is burnt in a restaurant, etc., to the outside of the restaurant. The exhauster includes: a hood tube in which a plurality of hood pipes can be combined so as to be folded in a multi-stage, and packings are applied to connection portions of the respective pipes to thereby prevent a gap from being formed between the connected hood pipes and the leak of the foreign matters from occurring; a hood main body having a space portion of a vertical direction length so that the contracted hood tube is completely inserted when the hood tube has been completely contracted, an exhaust tube having a fan which is installed at an axial portion in communication with the hood main body, and a bracket which is installed at the upper end thereof to then be fixed on the ceiling; and an elevating apparatus which is provided on the bottom of the bracket of the hood main body, including a winding reel around which a lifting chain is wound and a motor driving the winding reel, to thereby extend or contract the hood tube, in which the elevating apparatus is driven by a wireless remote controller.

CROSS-REFERENCE TO RELATED PATENT APPLICATION

This application claims the benefit of Korean Utility Model RegistrationApplication No. 20-2005-0029123, filed on Oct. 12, 2005, in the KoreanIntellectual Property Office, the disclosure of which is incorporatedherein in its entirety by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an exhauster for a roaster which canexhaust the smell and the smoke which are generated when the meat isburnt in a restaurant, etc., to the outside of the restaurant, and moreparticularly, to an exhauster for a roaster, in which a plurality ofhood pipes can be telescopically combined to form a hood tube in amulti-stage, and thus the hood tube is completely inserted into a hoodmain body, and since the exhauster including the hood tube is completelyburied and installed into a ceiling slab, to then be hidden, the wholeaesthetics in the restaurant are prevented from being degraded due tothe exposure of the exhauster.

2. Description of the Related Art

In general, an exhauster for a roaster which can exhaust the smell andthe smoke which are generated when the meat is burnt in a restaurant,etc., is provided in the restaurant, etc.

A conventional exhauster which is generally used in a restaurant etc.,is a wall-mounted ventilation fan. At least one ventilation fan isinstalled on an opening formed by boring the surface of a wall. Theventilation fan is driven to discharge the polluted indoor aircontinuously to the outside. However, the wall-mounted fan has alimitation to completely exhaust the smoke and smell which areconsistently generated in the process of roasting the meat. As a result,the smoke including foreign matters remains in the indoor air to thusmake the indoor air polluted and sticks to the indoor wall to thusimpair the interior appearance.

Therefore, in order to solve the above-described problems, there hasbeen proposed an exhauster for a roaster in which the smoke and thesmell generated in the process of burning the meat are locallydischarged so that the smoke and smell including the foreign matters donot remain in the indoor air.

There have been proposed a variety of configurations through a number ofknown documents including Korean Utility Model Registration Nos. 0329846and 0391741 as exhausters for a roaster. In most cases, a hood tubewhose height is controlled is disposed adjacently at the upper side ofthe roaster which is put on a dining table. The hood tube is connectedto a hood main body having a built-in fan and fixed on a ceiling. Thesmoke and smell generated when the meat is burnt are inhaled locally bya fan blowing force in the hood main body, and then discharged out.

A configuration of a conventional exhauster for a roaster will bedescribed in more detail with reference to the accompanying drawings.FIG. 1 is a perspective view showing a conventional exhauster for aroaster, and FIG. 2 is a cross-sectional view of FIG. 1. Referring toFIGS. 1 and 2, the conventional exhauster for a roaster includes a hoodtube 2 which is installed above a roaster 1, a hood main body 3 to whichthe upper end of the hood tube 2 is connected and fixed on a ceiling, anelevating apparatus 4 which is built in the hood main body 3, and adriving portion 5 which is installed at the side portion of the hoodmain body 3 for driving the elevating apparatus 4.

The hood tube 2 includes a hood 20 which is installed at a distance fromand above the roaster 1, a movable tube 22 to which the hood 20 isconnected, and a stationary tube 24 in which the movable tube 22 movestelescopically.

The hood main body 3 is of a hollow cylindrical form at one side ofwhich a connection pipe 30 is provided to connect with a main duct andat the lower side of which the upper end of the stationary tube 24 isfitted and fixed. A fan 32 for inhaling the smell and smoke is built inthe hood main body 3. The elevating apparatus 4 which is driven by thedriving portion 5 is installed in the lower portion of the fan 32.

Here, as shown in FIG. 2, the elevating apparatus 4 includes a windingdrum 40 which is fixed to an extended axis from the shaft of the drivingmotor 50 of the driving portion 5, and a wire 42 which is wound aroundthe winding drum 40. Here, one end of the wire 42 is fixed to thewinding drum 40, and the other end thereof is fixed to one side of themovable tube 22. Accordingly, the movable tube is reeled on the windingdrum 40 by the driving of the winding drum 40 by the motor and thus themovable tube 22 is wound up and down to contract and expand the movabletube 22 with respect to the stationary tube 24.

That is, in the above-described conventional exhauster for a roaster,the movable tube 22 is contracted and expanded in the stationary tube bythe operation of the elevating apparatus 4 including the motor. If theheight of the hood 20 is appropriately controlled from the roaster 1,the smoke and smell which are generated when burning the meat can beeffectively inhaled and discharged out.

However, in the case of the conventional exhauster for the roaster asdescribed above, the stationary tube 24 connected to the hood main body3 cannot be completely embedded in the hood main body 3. As a result,even in the case that the movable tube 22 has been completely folded,the hood tube 2 which includes the movable tube 22 and the stationarytube 24 is of a structure of protruding downwards. That is, as shown inFIG. 2, the fan 32 is built in the hood main body 3, and the elevatingapparatus 4 including the winding drum 40 is built in the lower portionof the fan 32. Therefore, although the wire 42 is completely pulled andthus the hood tube 2 including the movable tube 22 and stationary tube24 is completely folded up, the hood tube 2 is not completely insertedinto the hood main body 3, and cannot but be protruded to the outside.Therefore, although a ceiling slab (not shown) is installed at adistance from the ceiling wall in order to cover the hood main body 3,the hood tube 2 cannot help being found in the indoor space of thedining room and thus the internal environment of the dining room isindecent owing to the protruded hood tube.

Moreover, as shown in FIG. 2 which is a partially enlarged view of thestructure of connecting the movable tube 22 and the stationary tube 24,flanges 220 and 240 are protruded outwardly and inwardly from the upperend of the movable tube 22 and the lower end of the stationary tube 24,respectively. Even at the time of the maximum expansion of the hood tube2, the movable tube 22 is not easily seceded from the stationary tube24. Accordingly, gaps may be formed between the connection portion ofthe respective tubes, and the polluted materials which are put throughthe hood tube 2 may flow and leak via the joint portions to then beunable to be clean.

In the meantime, the oil, fat and the burnt deposit included in thesmoke which is generated when roasting the meat is adhered and condensedto the inner portion of the hood tube 2 and they are condensed to someextent and then expanded and flow down the inner portion of the hoodtube 2, to then fall over the meat to cause an insanitary problem toarise.

SUMMARY OF THE INVENTION

To solve the above problems of the conventional art, it is an object ofthe present invention to provide an exhauster for a roaster, in which aplurality of hood pipes can be telescopically combined to form a hoodtube in a multi-stage, to thus make the hood tube completely insertedinto a hood main body, a fan built in a hood main body fixed on aceiling is provided at the side of the hood main body, a space portionin which the completely folded hood tube can be completely buried in thehood main body is formed, and since the exhauster including the hoodtube is completely buried and installed into a ceiling slab, to then behidden, the whole aesthetics in the restaurant are prevented from beingdegraded due to the exposure of the exhauster.

It is another object of the present invention to provide an exhausterfor a roaster in which packings are applied to connection portions ofthe respective pipes to thereby prevent a gap from being formed betweenthe connected hood pipes and the leak of the foreign matters fromoccurring via the connection portions.

It is still another object of the present invention to provide anexhauster for a roaster in which a diffuser playing a role of an oilreceiver is installed in the lowest hood tube with which a hood isconnected, to thereby prevent the contaminant streaming down through theinner portion of the hood tube from falling over a roaster roasting themeat, and thus provide a sanitary dining environment.

To accomplish the above object of the present invention, there isprovided an exhauster for a roaster comprising:

a hood tube in which a plurality of hood pipes can be combined so as tobe folded in a multi-stage, and packings are applied to connectionportions of the respective pipes to thereby prevent a gap from beingformed between the connected hood pipes and the leak of the foreignmatters from occurring;

a hood main body having a space portion of a vertical direction lengthso that the contracted hood tube is completely inserted when the hoodtube has been completely contracted, an exhaust tube having a fan whichis installed at an axial portion in communication with the hood mainbody, and a bracket which is installed at the upper end thereof to thenbe fixed on a ceiling; and

an elevating apparatus which is provided on the bottom of the bracket ofthe hood main body, including a winding reel around which a liftingchain is wound and a motor driving the winding reel, and in which theother end of the lifting chain wound around the winding drum isconnected with the upper end of the lowest hood tube where a hood isprovided, to thereby extend or contract the hood tube by rotation of thewinding reel, in which the elevating apparatus is driven by a wirelessremote controller.

Here, a diffuser playing a role of an oil receiver is further installedin a hood which is provided in the lowest hood tube with which a hood isconnected by the medium of the bracket and an adjusting bolt.

In addition, the hood is configured to have a plurality of vanes whichare neighbor-arranged so as to be folded in the circumferentialdirection, in which the external diameter is expanded or reduced in thecircumferential direction.

Moreover, a limit switch having a connection structure which isconnected with a motor is further installed in the connection portion atwhich the hood main body and the hood tube are connected, and a remotesensor having an electrical connection structure between the motor andthe limit switch is further installed at the side of the hood main body,to thereby be possible to perform a remote control.

Moreover, bolting holes are formed in both ends of the bracket of thehood main body, stay bolts on all the surfaces of which screw threadsare formed are engaged with a pair of screw nuts which are installed inthe upper and lower portions around the bracket, and the upper ends ofthe stay bolts are spirally engaged on the wall surface of a ceilingwhere the exhauster is installed and then fixed by screw nuts, tothereby minutely adjust height of the hood main body including thebracket and the hood tube according to adjustment of the tighteningforce of the screw nuts.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or other objects and advantages of the present inventionwill become more apparent by describing the preferred embodiment thereofin more detail with reference to the accompanying drawings in which:

FIG. 1 is a perspective view showing a conventional exhauster for aroaster;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3. is a side sectional view showing an overall configuration of anexhauster for a roaster according to the present invention;

FIG. 4 is an enlarged view showing essential portions of a hood tubeconnection portion for use in an exhauster for a roaster according tothe present invention;

FIG. 5 is an enlarged view showing essential portions of a hood tubeelevating apparatus of an exhauster for a roaster according to thepresent invention;

FIG. 6 is a plan view of FIG. 5; and

FIG. 7 shows a condition of installing and using an exhauster for aroaster according to the present invention.

DETAILED DESCRIPTION OF THE INVENTION

An exhauster for a roaster according to a preferred embodiment of thepresent invention will be described with reference to the accompanyingdrawings.

FIG. 3. is a side sectional view showing an overall configuration of anexhauster for a roaster according to the present invention. As shown inFIG. 3, the exhauster for a roaster according to the present inventionincludes a hood body 7 at the side of which a fan 74 is equipped, a hoodtube 50 which is combined in the lower portion of the hood body 7, andan elevating apparatus 8 elevating the hood tube 50.

First, the hood tube 50 is a suction tube which inhales the smoke andsmell generated through a roaster in which a plurality of pipes aretelescopically combined so as to be folded in a multi-stage. A hood 6having an extrinsic expansion section is connected at the lower end ofthe pipe positioned at the lowest bottom in order to collect the smokeand smell which are generated when burning the meat.

Here, as shown in FIG. 4, flanges 52 a and 52 b are formed outwardly andinwardly in the upper and lower end portions of the respective tubes,respectively. Accordingly, although the hood tube 50 is extended at themaximum, the respective tubes are not seceded from each other. Packing55 is interposed between the connection portions of the respectivepipes, that is, one pipe flange 52 a and the other pipe flange 52 b withwhich the one pipe flange 52 a is fitted, to thereby prevent a gap frombeing formed and the foreign matters from leaking.

In addition, a diffuser 9 playing a role of an oil receiver is furtherinstalled in the hood 6 which is provided in the lowest hood tube withwhich the hood 6 is connected by the medium of the bracket 92 and anadjusting bolt 94. The pollution materials and condensed oil or fatdeposited in the inner portion of the pipe flows down along the pipe,and finally collected by the diffuser 9, to thereby prevent the pollutedmaterials or condensed oil or fat from falling down to the meat put onthe roaster.

Next, the hood main body 7 is installed in communication with an exhaustduct (not shown) prepared in an indoor ceiling. An exhaust pipe 72 isinstalled at the side of the hood main body 7 in communication with thehood main body 7, and a fan 74 is installed at the upper side of theexhaust pipe 72. Accordingly, differently from the conventional hoodmain body having a fan at the inner center of the hood main body, thehood main body 7 has a space portion 70 of a vertical direction lengththerein. The upper portion of the highest pipe in the hood tube 50 isconnected to the lower portion of the hood main body 7. When the hoodtube 50 has been completely contracted, the hood main tube 7 has thespace portion 70 of a vertical direction length so that the contractedhood tube 50 can be completely inserted. A bracket 76 is installed inthe upper end of the hood main body 7, so as to be fixed to a ceiling.

In the meantime, the elevating apparatus 8 is provided on the bottom ofthe bracket 76 of the hood main body, including a winding reel 84 aroundwhich a Iifting chain 82 is wound and a motor 86 driving the windingreel 84.

Here, as shown in FIGS. 5 and 6, the winding reel 84 is rotatablymounted on the bottom of the bracket 76 by the medium of a pair ofbearings 85. The motor 86 is axially connected with the axial lineextended from the axis of the winding reel 84, to thereby drive thewinding reel 84. The other end of the Iifting chain 82 wound around thewinding reel 84 is connected to the upper side of the lowest pipe wherethe hood is provided in the hood tube. According to the forward andbackward rotation of the winding reel 84, the lifting chain 82 is pulledor released to thereby expand or contract the hood tube 50.

Moreover, bolting holes 77 are formed in both ends of the bracket 76 ofthe hood main body 7 in which the elevating apparatus 8 is installed.Stay bolts B on all the surfaces of which screw threads are formed areengaged with a pair of screw nuts N-1 which are installed in the upperand lower portions around the bracket 76, through the bolting holes 77.The upper ends of the stay bolts B are spirally engaged on the wallsurface of a ceiling where the exhauster is installed and then fixed byscrew nuts N-2, to thereby minutely adjust height of the hood main body7 including the bracket 76 and the hood tube 5 from the roaster when thehood tube 5 is expanded at the maximum according to adjustment of thetightening force of the screw nuts N-1 and N-2 (see FIGS. 5 and 6).

Operation of the exhauster according to the present invention having theabove-described structure and the function and the effect thereof willbe described with reference to FIG. 7.

FIG. 7 shows a condition of installing and using an exhauster for aroaster according to the present invention. As shown in FIG. 7, a hoodmain body 7 is fixed on a ceiling so that a hood tube 50 is disposedadjacently and spaced from above the roaster 1 prepared at the center ofa dining table.

Here, a fan 74 installed at the upper side of the exhaust pipe 72 in thehood main body 7 communicates with a main duct D installed in a ceilingthrough a flexible pipe F. The hood tube 5 is telescopically expanded orcontracted by driving of the lifting chain 82, to thereby be suspendedon the ceiling with a certain distance spaced from the roaster 1installed at the dining table.

If the fan is activated in this state, the smoke and smell generated inthe process of burning the meat which is placed on the roaster arecompulsively inhaled and discharged out to the outside via the hood mainbody 7, the exhaust pipe 72, the flexible pipe F and the main duct D.

An interval between the roaster and the hood 6 covering the upperportion of the roaster can be controlled according to selection of auser in order to control an air suction amount. In this case, an on/offswitch connected to the motor 86 is manipulated to operate to controlthe height of the hood tube 50. Preferably, a limit switch 10 having anelectrical connection structure which is connected with the motor isinstalled at a connection portion where the hood main body 7 and thehood tube 5 are connected. A remote sensor 11 having an electricalconnection structure between the motor and the limit switch 10 isinstalled at the side of the hood main body 7. Accordingly, the switchconnected with the motor can be manipulated, and the elevating height ofthe hood tube 50 can be controlled through a remote controllingoperation at a remote distance, as well.

Referring to FIGS. 5 to 7, the elevation operation of the hood tube 50will be described below in more detail. The motor 86 is driven accordingto the switching operation, and the winding reel 84 is rotated in theforward direction to thus release the lifting chain 82. Accordingly, thehood tube 50 which is combined in a multi-stage goes down by the weight.As a result, the hood tube 50 is unfolded stepwise and extended and thena separation distance between the roaster 1 and the hood tube 50 becomesnarrow. Here, packings 55 are interposed between the connection portionsof the respective pipes to thereby prevent a gap from being formedbetween the pipes and the foreign matters from leaking, which may begenerated between the respective pipes during elevating the hood tube50.

On the contrary, if the winding reel 84 is rotated in the reversedirection and thus the lifting chain 82 is wound around the winding reel84, the hood tube 50 is telescopically folded stepwise from the pipe ofthe hood tube 50 which is positioned at the lowest portion of the hoodtube 50, to then be contracted toward the ceiling. As illustrated inFIG. 7, when the hood tube 50 has been completely contracted, the hoodtube 50 is completely buried and inserted into the hood main body 7.Differently from the conventional configuration of the exhauster havinga fan and an elevating apparatus in the hood main body 7, since the fan74 is provided at the side of the hood main body 7 and thus the spaceportion 70 into which the hood tube 50 can be completely inserted isprovided in the hood main body 7 in the present invention, the hood tube50 is completely buried and inserted into the hood main body 7.

Accordingly, as shown in FIG. 7, if a roof slab 110 used for the ceilingfinish is installed at a height distant from the ceiling wall 100 atwhich the lowest end portion of the hood main body 7 is positioned, adistance separated between the roof slab 110 and the ceiling wall 100need not be long. As a result, the roaster exhauster which includes afan can be completely buried in the ceiling side so as not to beprotruded toward the indoor side.

Here, the hood 6 which is mounted at the lowest end of the hood tube 50is configured to have a plurality of vanes which are neighbor-arrangedso as to be folded in the circumferential direction, in which theexternal diameter is expanded or reduced in the circumferentialdirection. Not only the above-described hood tube 50 but also the hood 6are completely inserted into the roof slab 110 so as not to be exposedto the out side.

In the meantime, a diffuser 9 playing a role of an oil receiver 90 whichis installed in the hood 6 is provided in the lowest hood tube withwhich the hood 6 is connected by the medium of the bracket 92 and anadjusting bolt 94. The pollution materials and condensed oil or fat (orcondensed water produced during exhaust of air) deposited in the innerportion of the pipe flows down along the pipe, and finally collected bythe diffuser 9, to thereby prevent the polluted materials or condensedoil or fat from falling down to the meat put on the roaster.Accordingly, a more sanitary dining environment can be provided.

Furthermore, the diffuser 9 not only plays a role of an oil receiver butalso has a function of controlling an amount of air inhaled through thehood tube 50. That is, if an amount of tightening the nuts on theadjusting bolt 94 is controlled to thereby change a vertical height ofthe diffuser 9, a gap between the outer circumference of the diffuser 9and the inner circumferential surface of the hood 6, that is, an area ofa path through which air is inhaled is controlled.

As described above, according to an exhauster for a roaster, a pluralityof hood pipe scan be telescopically combined to form a hood tube in amulti-stage, to thus make the hood tube completely inserted into a hoodmain body, a fan built in a hood main body fixed on a ceiling isprovided at the side of the hood main body, a space portion in which thecompletely folded hood tube can be completely buried in the hood mainbody is formed, and since the exhauster including the hood tube iscompletely buried and installed into a ceiling slab, to then be hidden,the whole aesthetics in the restaurant are prevented from being degradeddue to the exposure of the exhauster.

Moreover, according to an exhauster for a roaster, packings are appliedto connection portions of the respective pipes to thereby prevent a gapfrom being formed between the connected hood pipes and the leak of theforeign matters from occurring via the connection portions.

Further, according to an exhauster for a roaster, a diffuser playing arole of an oil receiver is installed in the lowest hood tube with whicha hood is connected, to thereby prevent the contaminant streaming downthrough the inner port Ion of the hood tube from falling over a roasterroasting the meat, and thus provide a sanitary dining environment.

As described above, the present invention has been described withrespect to a particularly preferred embodiment. However, the presentinvention is not limited to the above embodiment, and it is possible forone who has an ordinary skill in the art to make various modificationsand variations, without departing off the spirit of the presentinvention.

1. An exhauster for a roaster comprising: a hood tube in which a plurality of hood pipes can be combined so as to be folded in a multi-stage, and packings are applied to connection portions of the respective pipes to thereby prevent a gap from being formed between the connected hood pipes and the leak of the foreign matters from occurring; a hood main body having a space portion of a vertical direction length so that the contracted hood tube is completely inserted when the hood tube has been completely contracted, an exhaust tube having a fan which is installed at an axial portion in communication with the hood main body, and a bracket which is installed at the upper end thereof to then be fixed on a ceiling; and an elevating apparatus which is provided on the bottom of the bracket of the hood main body, including a winding reel around which a lifting chain is wound and a motor driving the winding reel, and in which the other end of the lifting chain wound around the winding drum is connected with the upper end of the lowest hood tube where a hood is provided, to thereby extend or contract the hood tube by rotation of the winding reel, in which the elevating apparatus is driven by a wireless remote controller.
 2. The exhauster for a roaster according to claim 1, further comprising a diffuser playing a role of an oil receiver which is installed in a hood which is provided in the lowest hood tube with which a hood is connected by the medium of the bracket and an adjusting bolt.
 3. The exhauster for a roaster according to claim 1, wherein the hood is configured to have a plurality of vanes which are neighbor-arranged so as to be folded in the circumferential direction, in which the external diameter is expanded or reduced in the circumferential direction.
 4. The exhauster for a roaster according to claim 2, wherein the hood is configured to have a plurality of vanes which are neighbor-arranged so as to be folded in the circumferential direction, in which the external diameter is expanded or reduced in the circumferential direction.
 5. The exhauster for a roaster according to claim 1, wherein bolting holes are formed in both ends of the bracket of the hood main body, stay bolts on all the surfaces of which screw threads are formed are engaged with a pair of screw nuts which are installed in the upper and lower portions around the bracket, and the upper ends of the stay bolts are spirally engaged on the wall surface of a ceiling where the exhauster is installed and then fixed by screw nuts, to thereby minutely adjust height of the hood main body including the bracket and the hood tube according to adjustment of the tightening force of the screw nuts.
 6. The exhauster for a roaster according to claim 1, further comprising a limit switch having a connection structure which is connected with a motor which is installed in the connection portion at which the hood main body and the hood tube are connected, and a remote sensor having an electrical connection structure between the motor and the limit switch which is installed at the side of the hood main body, to thereby be possible to perform a remote control. 